Volume 8

Issue 07,2015

(29 articles)


Kaibo Zheng, Khadga Karki, Karel ídek and Tnu Pullerits (*)

We review recent progress in the studies of ultrafast photoinduced dynamics in semiconductor colloidal nanocrystals and their composites with metal oxide acceptor systems. Electron and hole dynamics and trapping, multi-exciton processes, exciton dynamics, and their relevance for photovoltaics are discussed.
2015, 8(7): 2125–2142

Cheng-Cai Wang1,5, Qing-Jie Li1,4, Liang Chen1,2, Yong-Hong Cheng2, Jun Sun1, Zhi-Wei Shan1 (*), Ju Li1,3(*), and Evan Ma1,4 (*)

Using nanoscale electrical discharge-induced rapid joule heating, ultrafast welding of small-volume metallic materials is realized without introducing obvious microstructure change, which is distinct from bulk welding.
2015, 8(7): 2143–2151

Yuanyuan Jiang1,§, Zijian Deng2,§, Dan Yang3, Xin Deng1, Qi Li1, Yinlin Sha3 (*), Changhui Li2 (*), and Dongsheng Xu1 (*)

Gold nanoflowers (AuNFs) are presented as a novel contrast agent for photoacoustic tomography (PAT). By binding folic acid (the molecular probe), the tail-vein injected AuNFs concentrated within the tumor site, which was clearly visualized by three-dimensional PAT imaging.
2015, 8(7): 2152–2161

Zheng Lou§, Ludong Li§, and Guozhen Shen (*)

Rigid and flexible photodetectors fabricated with ZnGa2O4 nanowires showed good sensitivity, with good spectral responsivity and high external quantum efficiency. The flexible photodetectors had high mechanical flexibility and good folding strength, and are thus excellent candidates for flexible optoelectronic devices.
2015, 8(7): 2162–2169

Zaixing Jiang1,2,§, Shuai Zhang2,§, Chuanxu Yang2, Jrgen Kjems2, Yudong Huang1 (*), Flemming Besenbacher2, and Mingdong Dong2 (*)

The degradation kinetics of 3D DNA box origami in serum using high-speed atomic force microscopy is demonstrated. Our findings provide valuable insights for further modifications to improve the biocompatibility of DNA nanostructures in future applications.
2015, 8(7): 2170–2178

Zhao Li (*), Jianfu Ding, Paul Finnie, Jacques Lefebvre, Fuyong Cheng, Christopher T. Kingston, and Patrick R. L. Malenfant (*)

Raman microscopy mapping can be a powerful characterization tool to quantify residual metallic carbon nanotubes in high-density networks of enriched semiconducting single-walled carbon nanotubes.
2015, 8(7): 2179–2187

Tatiana S. Dorofeeva, Erkin Seker (*)

Electrical current is used to tune pore morphology of nanoporous gold thin films at significantly lower temperatures than previously reported via electrically assisted mechanisms. This technique allows for precise control of the extent and location of pore coarsening, producing a wide range of distinct morphologies on a single substrate for high-throughput studies of structure–property relationships.
2015, 8(7): 2188–2198

Pauline Vitry1, Eric Bourillot1 (*), Cédric Plassard1, Yvon Lacroute1, Eric Calkins2,3, Laurene Tetard2,3, and Eric Lesniewska1

3D reconstruction of low density dielectric nanostructures embedded in a polymer layer has been achieved using mode synthesizing atomic force layer microscopy. The study suggest that with controlled tuning of imaging parameters, the new acoustic-based technique can surpass most common nanoscale technique to study changes in mechanical properties, with added depth resolution for volume imaging.
2015, 8(7): 2199–2205

Alex Henning, Nandhini Swaminathan, Andrey Godkin, Gil Shalev, Iddo Amit, and Yossi Rosenwaks (*)

Tunable diameter electrostatically formed nanowire for use in a highly sensitive and robust room temperature gas-sensing device.
2015, 8(7): 2206–2215

Qi Han1, Yongqi Fu1 (*), Lei Jin1, Jingjing Zhao2, Zongwei Xu3, Fengzhou Fang3, Jingsong Gao2, and Weixing Yu4

In the visible regime, the experimentally measured absorption of germanium nanopyramid arrays can reach 100%.
2015, 8(7): 2216–2222